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Comment Re: Does This Make Sense? (Score 1) 318

You do realize that the mere existence of the Model S, with an AC motor directly coupled to the wheels and doing 0-60 in a little over 3s, proves that you have absolutely no idea of what you are talking about? Seriously, find any graph of torque curves for AC motors.

Even my humble Leaf is faster than most cars I meet from standstill since it has instant torque from 0 rpm.

Comment Re:Good short term, bad long term. (Score 1) 192

No oil in Sweden, and they are doing quite well. Not much oil in Denmark either (but some), and they are doing well too. It's very possible to run a modern welfare state (i.e. what you call "semi-socialist") without going bankrupt or have exceptional incomes to support it. The real world may not operate exactly like your ideology tells you it should.

Comment Re:I call bullshit (Score 1) 476

By connector I mean the plug that goes into the wall as that is what the post I replied to assumed. This is the same. The UMC, the small box on the charging cable that is not a charger at all, is supposed to be designed specifically for Norway to accept the strange grounding (as in finding 0 V between any wire and ground is a very bad sign!). Obviously, they didn't quite succeed. However, reports from the Norwegian EV-forums seem to indicate that a firmware update of the car itself has solved the problem for most people.

Comment Re:If you live in Norway, stick with proven tech (Score 4, Informative) 476

My Nissan Leaf works perfectly during the Norwegian winter, and the Tesla owners I know here in Norway are very satisfied with their cars. They have had some charging problems, though. This has nothing to do with the connectors (which are the same as in Germany and France), and everything to do with the strange grounding system used here. In short: Both wires are live, we have 230 V between the phases (all three), and ground is, well, somewhere, who knows really. This is what seems to confuse the Tesla charging cable as it believes it has detected a ground fault and shuts down. As third party charging cables work perfectly, Tesla probably needs to redesign the charging cable in Norway and give a new one to every customer.

Perhaps you shouldn't give such strong advice on topics you are not that familiar with?

Comment Re:I call bullshit (Score 5, Informative) 476

The Norwegian power system is actually very different from the rest of Europe. The three phase system in Europe has 400 V between the phases and 230 V between each phase and the neutral wire which is grounded. Such a system is called a TN system (Terra Neutral).

Norway, on the other hand, has 230 V between the phases and is completely isolated from the ground. With a perfectly balanced load you can expect ~127 V ground-phase, but the voltage can stray far away from that. This is an IT system (Insulated Terra). The Tesla charging cable is quite picky with the grounding, so it isn't working as it should.

This has nothing to do with the connectors, which are the same in Norway as in Germany or France.

Comment Re:Electric cars are *not* more energy efficient (Score 1) 327

No. Depth of discharge is significant for battery wear. Going 80 % -30 % twice is not the same as going 100 % - 0 % once. Note that laboratory tests on batteries are based on 100-0 % cycles that are deeper than what the car allows. An "empty" battery is not at 0 % SOC. There is a buffer in the bottom and probably at the top too. Look here.

Comment Re:surprise (Score 1) 232

An impact with enough force to punch through the armour protecting the battery can not be classed as "fairly minor". According to Tesla, the force was 25 tons (which means 250 kN), which is a lot. Most likely, the results would have been much worse if had happened to any other car without the extra protection under the floor.

Comment Re:1.4 million?? (Score 3, Informative) 202

The present city border is completely arbitrary. The municipality and county of Oslo has 623,966 residents (or so), but in most directions from the city centre, it is imposssible to guess when you cross into the neighbouring county of Akershus. The figure of 1.4 million is for the Oslo metropolitan area which at least I think gives a better idea of the city's size.

Comment Re:Laptop batteries, anyone? (Score 2) 157

High battery temperature and a high state of charge is a killer combination for Li-ion batteries. This is exactly what happens in a laptop that is plugged in and running. An electric car, on the other hand, usually avoids this. My Nissan Leaf charges to 80 % SOC, unless I explicitly ask it for a full charge, and even then it will not allow the batteries to reach the real 100% SOC. (Just like the batteries aren't really empty at 0 % SOC.) The advice is not to leave the batteries at full charge for more than a few days, and preferably only a few hours. The Leaf does not have active cooling (but the Model S has) which is not a problem in most climates. The batteries are still cooler than the laptop batteries that are stacked next to the CPU, at least in my laptop. The exception here is Arizona, as some Leaf owners have been unfortunate enough to discover. No problems after 21 000 km in Norway, though... there is still snow on the lawn!

Comment Re:Standards (Score 5, Insightful) 220

So, is that an average cost of $3.25 per gallon of amps? Or $3.25 per litre of voltage?

$3.25 for ~30 KWh (charging rate for these things is about 65 KW).

So, 330 of the things in Estonia, they each support one vehicle at a time...~8000 EV's per day supported by the entire network, assuming that every one of them is being used 24/7?

Hmm, wonder how far your average EV goes on 30 KWh....

You seem to lack experience with electric vehicles, so let me enlighten you. I have driven a Leaf 12 000 miles the last year and know a thing or two:

Most EV owners will use these stations very rarely. Charging is usually done at night or at work when the vehicle is parked anyway. Any ordinary electrical outlet will supply enough energy in 8 hours for a lot of driving. Assuming 230V/10A 8 hours will give 230*10*8*0.9 ~= 16 kWh of energy (90 % charging efficiency) This is enough for at least 80 km, possibly more than 100 km, depending on roads and driving style. Most places, at least in my country, 16A is available most places which would add 60 % to the above figures.

Quick charging is only ever used if you want to go much farther than usual, which should happen rarely. Few people will buy an EV if the daily commute cannot be done on a single charge, possibly charging in both ends. Luckily, most people commute much shorter than the range of current EVs and with this quick charger network, they can cover longer distances when needed, albeit spending some time charging. Thus this network can service a lot more than 8000 cars. It will be interesting to see if this will result in mass adoption of EVs in Estonia. The infrastructure is certainly there, but I fear EVs are still a tad too expensive for a population that isn't too rich generally.

Comment Re:I call BS (Score 2) 167

I see no reason for heating to be less energy intensive than cooling.

I can. An electric heater can be nearly 100% efficient. An air conditioner isn't going to be anywhere near that.

You are quite right. It is more than 100 % efficient since it uses a heat pump. It takes less than 1kWh of energy from the battery to remove 1 kWh of heat from the car. Tesla uses a heat pump for heating too, so it's also more than 100 % efficient, by the way.

"There are things that are so serious that you can only joke about them" - Heisenberg